* {
    margin: 0;
    padding: 0;
}
ul li {
    list-style: none;
}
a {
    text-decoration: none;
}
/* 标题部分 */
.head {
    width: 100%;
    height: 100px;
    background-color: rgba(7,88,135);
    color: rgba(197, 233, 255); 
    display: flex;       
}
.head  .title{
    font-size: 35px;   
    font-weight: 100;
    margin-left: 50px;
    line-height: 100px; 
}
.head ul {
    display: flex;
    line-height: 100px;
    margin-left: 70%;
}
.head ul li {
    width: 80px;
}
.head ul li a ,.nav ul li a{
    color: rgba(197, 233, 255);
}
/* 导航栏部分 */
.nav {
    height: 70px;
    width: 100%;
    background:linear-gradient( rgba(77, 133, 168),rgba(7,90,140,0.9));
    border-bottom: 2px solid rgba(77, 133, 168, 0.5);
}
.nav ul {
    display: flex;
    line-height: 60px;
    margin-left: 35px;
}
.nav ul li {
    height: 30px;
    width: 200px;
    border: 1px solid white; 
    border-radius: 15px;
    box-shadow: 2px 2px 3px rgba(197, 233, 255,0.5);
    line-height: 30px;
    margin-left: 15px;
    margin-top: 15px;
    text-align: center;
}
.nav ul li:hover {
    background-color: rgba(7,90,140);
}
/* 内容部分 */
.content {
    width: 100%;
    height:900px;
    background:linear-gradient( rgba(77, 133, 168),rgba(195,213,225,.3));
}
.content .content-title {
    font-size: 50px;
    color: rgba(197, 233, 255);
    padding-top: 200px;
    font-weight: 200;
    margin-left: 80px;
    -webkit-box-reflect: below 5px  linear-gradient(transparent , rgba(255,255,255,.5)); 
}
.content img {
    width: 936px;
    height: 400px;
    margin-left: 850px;
    margin-top: -50px;
}
